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https://issues.apache.org/jira/browse/MAPREDUCE-2863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13125853#comment-13125853
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Robert Joseph Evans commented on MAPREDUCE-2863:
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The JMXJsonServlet is already running on all servers that use HTMLServer for
their web interface. If what we want to expose are metrics then yes we
probably want to just use the normal metrics system and not add in any new
interface to get the data. However I don't think that JMX is the way we want
to go for all APIs. The JMX interface is not very RESTful. It provides all of
the metrics or allows you to do a simple query based off of the name of the
metric you care about. It also is not set up to support POST, PUT, DELETE,
etc. operations. In the future we may want to add in write not just read
interfaces. i.e. a kill-job button on the GUI (Just speculating, I have no
real idea what might happen with an interface like this).
> Support web-services for RM & NM
> --------------------------------
>
> Key: MAPREDUCE-2863
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2863
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2, nodemanager, resourcemanager
> Reporter: Arun C Murthy
> Assignee: Thomas Graves
>
> It will be very useful for RM and NM to support web-services to export
> json/xml.
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